Lightnews — Scholar-powered news

Jakub Žák @fishjakub.bsky.social · 5d

What determines mitochondrial number in Ethiopian Rodents from two Mountain regions? Species? Tissue? Elevation?
@botzool.bsky.social @ivb-cas.bsky.social
doi.org/10.25225/jvb...

1 1

Reposted by Jakub Žák

George Takei @georgetakei.bsky.social · Jan 11

I fear there is deep truth here.

1.4K 14K 56K

Jakub Žák @fishjakub.bsky.social · Aug 12

An interesting reading. Dietary restriction is intensively using mice as a model. Wheatley et al suggest that mouse physiology may considerably confound the real effects of dietary restriction, meaning that mice may not be the ideal model for studying DR
link.springer.com/article/10.1...

The cold truth: torpor as a confound in studies of caloric restriction - Journal of Comparative Physiology B

Calorie restriction has been shown to dramatically extend lifespan in a range of species. Beyond longevity, calorie restriction is also reported to improve cognitive function, ameliorate neurodegenera...

link.springer.com

Jakub Žák @fishjakub.bsky.social · Jun 11

full text is here
www.tandfonline.com/doi/full/10....

Ultrastructural alterations of hepatocytes in short-lived model fish, Nothobranchius furzeri Jubb, 1971

The hepatocytes from 40 Nothobranchius furzeri, a promising model in biogerontology, were subjected to ultrastructural examination to provide a visual guide to the repertoire of hepatocyte alterati...

www.tandfonline.com

1

Jakub Žák @fishjakub.bsky.social · Jun 11

We published a visual guide to the repertoire of hepatocyte alterations recognized in Nothobranchius furzeri, a vertebrate model in aging research. Giant mitochondria and intense hepatocellular vacuolation are the most prominent features. #killifish

1 1 2

Reposted by Jakub Žák

Reichard Lab @fishecoevo.bsky.social · Jun 8

Interested in Fish Mating Systems? Join us for a small symposium in Brno, Czechia, from 21 to 23 January 2026! The invited speakers are Suzanne Alonzo, John Fitzpatrick, and Suzanna Pla. More information at fish.ivb.cz

1 2

Jakub Žák @fishjakub.bsky.social · Jun 9

Zpět z Německa, kde se konala konference o halančíkovi a jeho využití jako modelového organismu. Unikátní možnost podělit se o výsledky studia potravní preference halančíků

Jakub Žák @fishjakub.bsky.social · Apr 28

Je chov halančíků standardizován? Jaké jsou mezery? To vše v závěrečném dílu o laboratorních halančících nyní v Živě.

1 1

Jakub Žák @fishjakub.bsky.social · Apr 9

Od ledna má Ústav botaniky a zoologie MU nového ředitele.
shorturl.at/aa7Ua

Úspěchy našich kolegyň a kolegů | Přírodovědecká fakulta MUNI

Přírodovědecká fakulta Masarykovy univerzity je jednou z deseti fakult Masarykovy univerzity. Zároveň je též jednou ze čtyř nejstarších fakult, jež vznikly při založení Masarykovy univerzity v roce 19...

shorturl.at

Reposted by Jakub Žák

Royal Society Publishing @royalsocietypublishing.org · Mar 25

Happy 20th anniversary to #BiologyLetters! Take a look at our timeline of key milestones for the journal over the past 20 years. royalsocietypublishing.org/pb-assets/BL...

1

Reposted by Jakub Žák

Proceedings of the National Academy of Sciences @pnas.org · Mar 4

Larger species have a higher cancer prevalence than smaller species, according to a study that refutes Peto’s Paradox, the claim that that species’ body size is not correlated with cancer risk. In PNAS: www.pnas.org/doi/10.1073/...

The analysis found that Elephas maximus, the Asian elephant, has a lower than excepted prevalence of malignancy, but found no evidence to suggest that it has an exceptionally low prevalence of malignancy despite often being touted as the quintessential example of Peto’s paradox.

2 17

Jakub Žák @fishjakub.bsky.social · Feb 23

Aha, tak oni jsou statisicove odmeny nekolikrat do roka asi standard, kdyz jste rektor.

Reposted by Jakub Žák

FishEvo Zuzana Musilova @fishevo.bsky.social · Feb 19

Loving deep-sea fish and molecular evolution?

We're hiring!:-) Looking for a motivated PhD student to join us to study evolution of vision & to explore limits of vertebrate eye in extreme environment. Deadline 15th March. Thanks for applying and sharing!

more info: www.fishevo.com/erc-funded-p...

7 6

Jakub Žák @fishjakub.bsky.social · Feb 15

Vedení univerzity je jistě nelehká věc a zaslouží adekvátní ohodnocení. Ale nevím, jak často si “řadový” akademik přijde na odměny v řádu vícenásobků jeho mzdy. Ale je třeba prijem nasobit, když je 175 tis kč/měs?